1 // Copyright 2018 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "base/time/time_override.h" 6 7 namespace base { 8 namespace subtle { 9 10 #if DCHECK_IS_ON() 11 // static 12 bool ScopedTimeClockOverrides::overrides_active_ = false; 13 #endif 14 15 ScopedTimeClockOverrides::ScopedTimeClockOverrides( 16 TimeNowFunction time_override, 17 TimeTicksNowFunction time_ticks_override, 18 ThreadTicksNowFunction thread_ticks_override) { 19 #if DCHECK_IS_ON() 20 DCHECK(!overrides_active_); 21 overrides_active_ = true; 22 #endif 23 if (time_override) { 24 internal::g_time_now_function = time_override; 25 internal::g_time_now_from_system_time_function = time_override; 26 } 27 if (time_ticks_override) 28 internal::g_time_ticks_now_function = time_ticks_override; 29 if (thread_ticks_override) 30 internal::g_thread_ticks_now_function = thread_ticks_override; 31 } 32 33 ScopedTimeClockOverrides::~ScopedTimeClockOverrides() { 34 internal::g_time_now_function = &TimeNowIgnoringOverride; 35 internal::g_time_now_from_system_time_function = 36 &TimeNowFromSystemTimeIgnoringOverride; 37 internal::g_time_ticks_now_function = &TimeTicksNowIgnoringOverride; 38 internal::g_thread_ticks_now_function = &ThreadTicksNowIgnoringOverride; 39 #if DCHECK_IS_ON() 40 overrides_active_ = false; 41 #endif 42 } 43 44 } // namespace subtle 45 } // namespace base 46
